Calculating-machine.



J. O. ALMBN.

GALCULATING IsaAoHnlL.l APPLICATION IILED AYPB.13, 1912.

Patented May, 6, i913.

9 sHEET'sfsHEBT 1.

)y John @tto Hlmem, v W v I By I J. 0. ALMBN. GAL'GULATING MA'QHINB. -APPLIOATON FILED AIPB.13,..1912.

Patented'may 6, 1913.*

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Il. I. z I l. I if. Il |l` I J. 0. ALMEN. GALCULATING MACHINE. APPLICATION' ,FILED APB.I 3,"1912,

Patented May /lvo l John Q @ITT-Lew. By j I Nro/Mr J-. 0. ALMEN. CALGU'LATING MACHINE.

APPLICATION FILED APR. 13, 1912.

Patented May 6, 1913.

9 SHEETS-SHEET 5.

' WIM/ ESSE J. 0.'ALMEN..

GALCULATING MAGHINE'.

APPLICATION FILED 1123.13, 1912.-

1,060,878. Patented May-6, 1913.

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J. O. ALMEN. GALGULATING MACH'INE. APPLIGATION FILED A121113, 1912.

PatenteaiMay 6, 191.3.'

Illini-III RII* UNITED STATES Parnu usaron.

JOI-IN OTTO ALMEN, F SPKE, WASHINGTON, ASSIGNOR TG CONTITENTAL COM- PUTING CASH-REGISTER COMPANY', SPOKANE, WASHINGTON, A CORPORATON.

oALcpLA'rINe-MACHIN.

g lSip/cc/i'cati'on' of Letters Patent.

Patented May 6, 1913.

To all whom t may concern:

Be it known .that I, JOHN O'rro LMEN, citizen of the-United States of America, residing at Spokane,- intheooxmty of SpokaneI and State ofy Washington, haveinventedcera tain newandus'eful Improvements in Calculating-Machines, of which the following is' a specification. l

This invention pertains to calculating machines and has lfor-its object to provide a sure, simple and-accurate device forcomputing problems in addition and subtraction and furnishing the results thereof in figures.

With these and other objects in mind 4the invention comprises the' novel features 'of construction and combinations of parts more fully hereinafter described. Broadly speaking of a plurality of pairs of bars (one pair for.E each decimal'in-the minuend of the problem to be solved), the bars of veach pair Irepre'l sent-ing theminu'end andsnbtraliend respectively, and means for adjusting thebars to1 change the relative positions of lthe numerals subtrah'end and remainder of a given problem in subtract-ion. Isubtrahend side may be utilized to .total a column of igurs in addition.

A special feat-ure of the invention is the In the drawings Figure 1, is a fro-nt elevation'of the device With the casing broken away,

Fig. `2, is a sectional view taken on the line 2 2 of Fig. 1, Fig. 3, is a sectional view taken on the line 3--3' of Fig. 2, Fig. L1, is a sectional view taken on the line 4.-.-11 of. Fig.

2, Fig. 5, is a top view of the device, Fig.l 6,

is a disassembled view of the gears used to adjust the positions of the bars, Fig. 7, is an assembled view of the same, 8, is a broken-avvay plan view of a port-ion of the gearing showing the application of the bars thereto, Fig. 9, is a sectional view taken on the line ad?) of Fig. 8, Fig. 10, is a sectional view taken on the line c-Z of Fig. 8, Fig. 11.

is a broken-away view of the gear shaft-ing showing its connection With' a finger and the appiication of the same to operate a' plate in the practical use of ,the apparatus,

the invention consists? easing on the mechanism coperating with the bars, vto cause the same to indicate the mmuend,1.

Either the minuend orv is a broken-away plan View ofthe barsshowing their application to the gearing operating the totaling device, Fig. 13, is a sectional vievv taken on the'line a-b of Fig. 12, 14, is a sectional view takenv on the line c-cl of ig. 12, Fig. 15, is a sectional view taken. o n the line e-j' of Fig. 13, Fig. 16, is a sectional vieiv taken on the line 'gf-J1, vof Fig. 12, Fig. 17, is a plan view of the bars, showing their locking means, Fig. 18, is a sectional view taken on the line o-b of Fig. 17,

together With a section ,of the casing, and a brokenlavvay View of the keys withl a sectional view of ihev adjusting plates, Fig. 19, 1's a sectional vieiv taken on the line c-d of Fig. 17, together 'with a sectional view of theparts added in Fig. 18, Fig. 20, is an elevationof the crankshaft, showing also its connections With the other mechanism of the device, Figs.-.21 and 22 aresubstantially end elevations ofFig. 20.

The apparatus l`The machine illustrated in the drawings yprovides for calculations reaching up to three figures only, although' provision may be Vmade for as many figures as desired.

is provided With a suitable-v The.' primary mechanism is calculated for- Working problems in subtraction and inasmuch as it is desired to indicate the minuend, the subtrahend and the'remainder in numerals in separate gro-ups, I have provided a threefold construction and indicating device, the minuend construction being indicated by M-Fig l2, the subtrahend by S. Fig. 2 and the remainder by R Fig. 2.

A separate set of gearing and shafting' is provided for each the minuend, subtrahend and remainder. Each set of gearing' and shafting being alike and composed lofthe disassembled parts sh'oii'n in Fig. 6 and when assembled being as shown in'Fig. 7 the operation of Which will be hereinafter explained. These sets are marked on Fig. 2 as follows: The set operating the units columns is marked U: the set operating the tens` columns is marked T, and the set operating the hundreds columns is marked H. Bars 2G Fig. 2 in the shape' of the letter U` in cross-section, one for each column one each the minuend and subtrahend sides, ex-l tend longitudinally Within the casing 25, and carry'on their under surfaces racks (27 Figs'. 3 and 4) adapted for engagementwith gears to be hereinafter described.

bars 26. are providedwavith upwardly pro jectiirg pins 29, alternately arranged on the upwardly projecting portions (Fig. 2) thereof; Thebars 26are required-to be adju'sted longitudinally 'and are` therefore. mounted on transversely arranged rollers 28 (Fig. 2) vqperating in oblong slots 3l (Figs. 3 and 4'), Vthe rollers28l operating lin bearings in the' upright supports .lA-'staf 15 tionary plate- 34 (Figs..3 and 4) lsurIrx'founts the bars 2G"-and is provided with openings forlgthe passageof-.the lower ends, of the key stems 36. `lidably adjustedeonltop of 'the stationary plate 34 isa plate 37 provided 15 with openings; 38 for the 'passage-cf the lower .ends 'ofthe key stems 36. 'Ilfltgelxtreme .'.lpwer ends 39 of the keyistel's' 36 are bent at right angles with? stems,'every alternate one in each' lon itudinal row' of '29.keys being bent to the rig tand thepthgi alternatingones bent to the left. Each-row of keys Figs. 5 and 17) is numbered.

from one to nine inclusive in regular order from the front` end/of the machine.' The 25 portions 39 of the key stems *(36Fi-g.' 4) that.

are Vbentto the right are 'on the stems "36 having odd numbers on the keys 40 attached thereto andthe portionsv 39 ,benty to the left' are on the stems l.36 having, even -.numbers 30 on the keys `40 attachedthereto. t

The -key stems 36l pass'. hrugh Itho open;

I 4l of the top "of thefcasing 25 andare tied to the under sidefthoreofby means'of the coil springs -'(42 Fig.;y 4). The portions 35 39 on' the key stems 3.6.; are calculated t0.

corne: in the path of theprojecting pins 29 When'the keysv 40 are pressed'downwardy .bringin the lugs.43thrnigliv the openingsv 38- init e plate-37.Witlitlie stop pins 44 '40 bearing against the upper'sidel thereof,- the top surface of the lugsV 43 bearngaganst theunder side thereof.(FigaI 4).l lThe coil spring 46 attached to the slidably adjusted pate 37 and anchored tothe-.frame of the 45 machine as at 47 (Fig. 3)U holds the said plate'firinly againstthe back sidel of the key l. stems 36 .over .tl1e-l1'1gs43l locking.' the same in thefdepressed position until lreleased as hereinafterexplained: Underneath the top' 50'- ofjthegear 1end -of, the casing 25 are disks 48' with figures-elongitudin'ally arranged on "th-iii .upper-surfaces., running from. 0.1.to 9y inclusive, one. each of` such disks for the bars 26, to which bars lthe disks/48 are connected by means-ofthe rigid-rods 49 (Figs. Band-4). .The rods 49 are connected to the bars -26 bymeansofthe pins 50 l erating in the links 51, the 'same .being integral partsy Loaders ltheir'other ends connected to the U bars 26l as at 58 (Fig. 16). vv`'To the sides of the bars 26 are pivoted as zit-59 bars 60 provided With oblong slots 61 at their front ends (Figs. 3, 4 and 13) engaging the shaft 62 (Fig. l). The top front ends of these bars are provided with racks 63( ig. 2). The normal positionof the'disks 48 (Figs. 3 and 4) brin'gs'the 0 on them all directly underneath the openings 52.,in the top oftbecasing 25 (Figs. 3, 4

' and The apparatus is heldin .this po sition by vertical projections 64 Fig. 3 reach- 'ing lfrom the horizontal rods 65 Fig. 17,

Tsuch lrods 65 having bearings as at 66, se-

cured by hinges 67 to themechanism and also having horizontal projections 68 (Figs.

v17 and' 18) closely engaging the rear edges of the ends39 of the keystems 36.

Gearings, as stated before, made in sets,

'one for each column provided in each the `nrnnuend, subtrahend and rerhainder, are

made in two groups, an. idler and a gear free .from a shaft, gears 70 and 71 Figv 6v rigidly securedto shaft72, gears 73 and=74 rigidly secured to the tubular shaft 75, anv "idler gear 76 attached tothe stud 77 and a large gear 78 free from a shaft and serving as a housing for gears 71, 74 and 76, the

*stud- 77 carrying the gear 76 being secured to the inner Wall as at 79 of one of the parts comprising the gear 78 which is composed of" the parts 7 8 and 7 8b the same being hollowed out as at 8O to provide space for the gears' 7l, 74 and 76. The gear 71'is inv mesh with gear 76 and gear 76 is in mesh with gear 74 41g. 7.

'Underneath the top'of the rear end of the casing 25, at the center thereof, are disks 8l Fig. l with iigures longitudinally arranged on their upper surfaces in rotation and including 0 to 9, one each of such disks for the bars 82, to which bars the disks 81- are connected by means ofthe rigid-'rods 83 Fig. l.' The rods 83 are connected to the bars 8 2 by means of the pins 84 operating in the links 85 (Figs. l, 3 and 4)', the same being integral parts of thel rods 83. I Openings 86 in the top of the casing 25 make visiblethe numbers on' the disks 8l directly beneath the same. The rods 83 are adapted to oscillate upon the shaft 53 Fig. l. The rods 82 carry racks' 27 Fig. 3 (Figs. 3 and4)`on ltheir under surfaces 'adapted to mesh with gears 73 Fig. 6. Rollers 87 mounted on uprights 88 Fig.'2 and/.operatingin the oblong slots 31-R (Figs. 3 and 4) `serve as des for the longitudinal operation of the rods 82 Fig.. 2 as hereinafter explained. As stated before, thereis aset of gears, such as is indicatedV by Fig. 7 for 'each decimal in the problem to be solved, the gearZO eo operating witlfa mechanism connected tothe minuend indicator, the gear =78 cooperating with a 'mechanism connected to the subtrahend indicator and the gear 73 coperating with a mechanism .connected to the remainder indicator, each in mesh with the .racks 43 Fig. lag-einst the .horizontal pins 68,

Fig. Y2, .so that the bars 26; Fig'. 2 @Orresponding with'theycolumns of figures depressedon the keys are freeto move.l The' cranltd is drawn forward and .the bars Fig. 2 free. to more redrawn forward by' reason of their connection to the crank shaft Fig. 2 by means of the rods 56 connect Ved to the coil'springs 57 Fig. 20 which in turn are connected tothe rods 26. Fig. as at 89 F ig. 2. Thebars 26. Fig. 2 freed to move, asabove stated, will be broughtforward until they are stopped by the portions 39 Fig. 2 coming in Contact with the pins 29 Fig. 2 which. are'sol arranged and connected' up with the disks 48 Fig. 2r that the figures on the same will be registered directly underneath the openings 52 in the top of the casing 25 Fig. 5.

With themoying forward of the bars 26' and racks 27, the gear mechanism shown' lin Figs. 6 and 7 rotates as follows; The gears 70 and .71 secured to the shaft 72 rotate forward with the bars 26 and racks 27 on the -minuend side and the gears 78 rotate for-4 ward with the bars 26 and racks27 on the subtrahend side, and so long as both these sets of gears rotate together no other gears rotate, excepting that the pinion gears 76 attached to the walls of the gears 78 rotate .around the gears 74. When Athe .forward 5 0"n`ovenent ofthe bars 26 and the racks 27 l fon the subtrahend side are stopped .by the 'parts 39 Fig. 2 of the depressed keys in the subtrahend sidecoming in lcontact with the rods29 Fig. 2 on the bars 26, the gears 7 8; 7 stop rotating and the gears 70 `14`1'g.`7 keep on rotating until the higher numbers in theminuend side are reached. Just to the'extent that the minuend. ears Y are rotated' forward .after thel subtra lend vgears are stopped, the 'remainder' gears 73 Fig. 7 rotate backward, this backward movement being effected bythe gears 71 Fig. 6 in mesh With the pinion gears 76 Fig. 6 rotating the pinion gears 76 forward and thepini'on gears 76 being in mesh on the opposite side with 'the gears 74 Fig. 7 which rotate the gears '74 Fig.- 7 backward and these gears being secured to the same tubular-'shafts 75 with the gears 73 Fig. 7 rotate the gears 73 Fig. 7 backward carrying the racks 27 R-F ig. 7, backward. taking the bars 82 Fig. 2. with them. movement hasv the effect of registering the remainder figures on the disks 81 Fig. 2 directly underneath the openings 86 Fig. 5 inthe top of the casing 25-Fig. 5,. Thus This backward there exists underneath the openings on the i topV of thel casing 2,5.,Figfl 5 at'the left the figirres in therninuend columns, at the-,center the figures. in the remainder columns and at the right the. figures in the suhtrahend coltnnns. Inasmuch as it oft-en happens that in the lower columns of .the-subtrahend' gures' are cfa higher denomlnation than 1ny .the inmuend columns directly in alinement with them provision' is made for the borrowing or transferring process from thefigure in the .next higher column as follows: Attached to the sides of the bars 26 and horizontal therewith on the subtrahend side S Fig. 2 except as to the one corresponding .with unit columns, are plates 9.0 2, the. same being secured by hlnges 91 Fig. 9, lugs 92 Fig. 1l attached-to the racks 27 Fig. ll

which are brought into engagement with projections Fig. ll on the plates 9.0.

attached to the tubular shafts 75. Fig. l1.

(being the same shafts lshown in Figs. 6 and 7) arefn'gers 949 Fig. 1l so adjusted there- \to. as to have the eecthereihafter stated.

The locking engagement of the lug. 92 and projections 93 Fig. 11 is what holds the bars 26 in relative adjustment with their respective'racks 27 Fig. ll. When the ligure in the subtrahend nation than theone -in the minuend directly abovel it, it will be seen that the'sub trahend gear 78 Fig. 7 will be rotated farther than the gear 70 Fig. 7 on the corresponding minuendside. This of course rois of a higher denoinitates the rod 82 Fig. A7 forward to give the correct number-on its relative disk 8.1 Fig. 2 under the openings 82 Fig. 2, to the full effeet as iften had been borrowed from the columnl ahead in the Vrninuend the result being shown on the bend of the disksSl Fig. 2, but it leaves the ten in the next. column above in the remainder unless taken out. This ten is taken out in the following manner: The finger on the tubular shaft is r0- tated upwardly bythe .forward movement of the rack'27 R against the plate 90, .tip ping the lsame upwardly and releasing the lug 92 from the projection 93 on the'rack of the next higher column of the subtrahend thereby breaking the longitudinal locking engagement of the'bar26 with its rack 27- Fig.-11.` The bars 26 Fig. 2 have in their bottoms slotsl 9,4; Fig. 2, through which Irs body of the racks 27. Normally the screws 95'are at the back ends of the slots 94. The releasing of the locking engagement between the bar 26 and the rack 27 permits of the rack 27 rotating forward the-distance of the length of the said slot which 'is equivalent tothe distance between one figure and the next one to it on the disks 81 Fig. 2 of the remainder indicator. This rotates forward the gear 73 in the corresponding column' of the remainder carrying with it'the rack 217 R and`ba`r 82, consequently rotating backward the corresponding disk 81 Fig. 2 one space thereby removing .from the remainder the tenborrowed.y The result of any problem being obtained and it being de sired to return the mechanism to normal,- the crank 54 is turned forward causing the rods 56 Fig. 3 and the shoulders 96 Fig. 3 .to force the bars 26 and racks 27 back to normal, the rods 97 Fig. 3 to strike the suspended and pivoted .pins 98. driving them against the plates 39 and then resting against the projections 99 thereon releasing the key bars 36 so that the springs 42 return them to the positlionsshown in Fig. 3, the enumerating disks and other parts taking their relative positions. "ff

Atthe vfront end of the mechanism is a device which is so connected up with the general mechanism that c'olnmns offigures may be added' on each vthe minuend. and subtrahend 'sides thereof, totals ascertained, and then the same mechanism heretofore described used in subtracting the subtrahend from the 'r'ninuend and registering the balance to the same effect as an original problem in subtraction. Either the minuend side or subtrahend side may be used for adding purposes alone, if desired. Transversely arranged across the front end of the machine is a shaft 100, having its bearings in the uprights 104. Wheels 101 Fig. 2 carrying a gear 102 on each s ide. thereof are attachedto separate sleeves 103 Fig. 14 engaging the shaft 100. The wheels 101 have provided on their peripheries numericals running from 0 to 9-inclusive, each numerical being an equal distance apart. Theshaft 62 Fig.`2 has small pins.105 Fig.-2 at the vends thereof which have bearings in the vertical slots106F-ig. 22 of 'the supports 107 Fig. 22. Attached to thewshaft are cams 108 Fig. 22 carrying recessed faces 109 Fig. 22. A post-110 Fig. 22 attached to the side thereof has pivoted. thereto asat 111, webs 115 reaching from the projections 112 to the projections 113 Fig. 22, and coil springs 114 Fig. 22, connecting the webs 115 to the cams 108 as at 116 Fig. 22. Attached to -the sleeves 103 Fig. 14 are fingers117 Fig. 13. Sleeves 118 Fig. 14 free on the shaft 62 have radiating therefrom prongs` 119 -Fg.. 13, lugs 120 Fig. 13 and projections 121 Fig. 13. Attached to the sidesof the rods 56 Fig. 13

are springs 122 Fig. 13. Attached to the sleeve 103 Fig. 2 are pins 123 Fig.` 2 oli-.,- rectly in the path of catches 124 Fig. 2 .of l

cross rod 126 Fig. 22. The wheels 101 are y normally arranged so that the 0 on the peripheries of each are directly underneath the vopenings 130 Fig. 5 of the lower end of the top of the casing 25.

l Links 131 Fig. 14 ldosely engaging the sleeves 118 Fig. 14.are provided with oblong slots 1324 Fig. 13 which engage the shaft 100 -Fig. 14 and are provided with horizontal projections 133 Fig. 14 adapted for engagevment with the gears 102 Fig. 14. Oblong slots 134 Fig. 13 are provided in the bars where the same are attached to the bars 26 Fig.`13 and a-coil spring 135 Fig. 13 is placed between the binding screws 59 and projections 136 Fig. 13, the binding screws 59 normally `engaging the slots 134 at the rear ends thereof. The small ends 105 Fig.

22 of the shaft 62 Fig. 20 are normally maintained at the top of theslots 106 Fig. 22. by the projections 112 of the cams 108 Fig. 22, but in the backward operation of the crank 54 in registeringthe result of a problem in subtraction the cam "108 is carried backward with the shaft 55 Fig. 22 and the ends 105.

are permitted to drop downward in the slots 106 Fig. 22 and the curved surface 109 of the cam 108 Fig. 22 will follow underneath the same until the projection 113 Fig. 22 is reached. This movement of the crank 54 as ,aforesaid carries the parts 26, 29, 60, 61., 63,'

56 and 122 Fig. 13 to the dotted lined po- .sitions marked with theletter a added. It

will be seen that the dropping of the shaft 62 throws the racks 63 out of mesh with the gears 102 Fig. 14 and the positions of the wheels 101 are not disturbed, but in the re- `again raised and the racks 63 thrown in mesh with' the gears 102 lFig. 14 and the wheels 101 Fig. '14 are rotated the same number of spaces as the bars 26 attached thereto registered out. The wheels 101 Fig. 14 regis?A ter through the openings-130- Fig. ,.51 pf;lth'` top. of the casing the same numbers .as'-were- .registered through the openings 52 Fig. 5

on the minuend'and subtrahend sides when the result of the problem .in subtraction was shown.V

laas much as there isn@ reverse motion also of th'ewheels 101 inthe backward movement of the crank 54, each the minuend 'and subtrahend sides may be continually totaled-so longfas 'is desired, which may be done for totaling purposes in problems in subtraction or the process may be carried on for the purposes of addition only7 in either the minuend or the subtrahend sides or both. There are ten 'sprockets to each 'ofthe gears 102 Fig. 13, the same number as there are numbers on the periph'eries of the Wheels 101 Fig. 13. In the process of adding the carrying from one columnup to aqhigher is accomplished in the following manner: The wheels 101 normally registering 0 the fingers 11.7 are just past the prong 119. When moreV than 9 is registered on the wheel 101 in the unit column or any other column the finger 117 attached to the sleeve 103 strikes the prong 119 Fig. 13 rotating the same forward a sufficient distance to permit of the finger 117 passing. This releases the projection 121' from the pin 137 Fig. 13 permitting the strong spring 122 to crowd the rack 63 cor responding to the next higher column of figures backward the length of the slot 134 Fig. 13 which is lthe distance of one figure on the periphery of the corresponding wheel 101 Fig. 14, whereby the one is added to the next column above. This process by the same successive mechanism can be carried up from eine column to another. W'hen the central key B Fig. 22 is pressed downward, the rods 125 and 127, and the curved arms 129 Fig. 22 assume the positions marked. with Athe letter c; added. The locking pins 64 Fig.

18 are thus rocked out, of engagement with the pins 29 leaving the bars 26 free to move the end of the webs 116 Fig. 22 as the projection 121 has been forced downward Vagainst the projection 112 by the end 138 Fig. 22 of the curved arm 129, so that when lthe crank 54 is drawn backward the ends 105 ride on the upper surface of the webs 115 instead of on the surface 10.9.of the-cam 10,8 Fig. 22 thereby holding the racks 63 in mesh with the gears 102l and the Wheels 101-Fig. 14 are rotated in an. oppositevdirection until the pins 123 Fig. 2 are blocked by the lugs 124 Fig. 2 on the rods 12F, Fig. 2Y

which will be when the wheels 101 Fig. 2

. have reached the point indicating zero. The

connections between the racks 63 and the.

bars 26 Fig. 2 together with the connection of the disks 48 and 81 transfers the figuresv from the totaling end ofthe machine to the subtrahend end and the minuend, subtrahend and remainder are there indicated. When tho shaft 62 Fig. 13 is at its highest position the projections 133 are out of engagement withr the gears 102, but when the shaft is at its lowest position the engagement takes place and revents any accidental change of position -o the wheels10l. .Whemthe shaft 69 drops to its lowest position at any time after a number has been carried from a lower to a higher column in addition by the method heretofore described, the projection 120 Fig. 13 strikes the end of the upright 139 Fig. 13 and drives the same from the dotted position 129a to 'normal as well as driving the other parts 119 and 121 to normal as shown in Fig. 13.

In the process o f addition as above described Where it is necessary to carry 'to the column above and utilize the slot 134 Fig. 13 in changing the relative positions of the bars 26 and 60 Fig. 13, it becomes necessary to release a locking means composed of a lever 140 Fig. 3 fulcrumed at 141 Fig. 3 with one end bearing against the lug 142 Fig. 3 on the bar 26 Fig. 3 'and theotlier end 143 Fig. 3

bearing. against the projection 121 Fig. When the prong 119 Fig. 13 is driven for- .wardby the finger 117 Fig. 13.*, the projec- 64 and 68 Fig. 19 to the positions shown in Fig. 17When free soto do.

Having thus described my invention what I claim as new and useful and desire to secure by vLetters-Patent, is,

1. ln. a calculating machine, the combination of a plurality of pairs of bars, paralleling each other across the machine and having racks attached thereto mounted on gears, the gears adapted to rotate independently of each other, the said bars adapted for longitudinal movement along with the racks over said gears, the length ofsuch movements being gagedby locking means effected by stops on the key bars engaging stops on the paralleling bars, a third system ofibars paralleling the said sets of bars across vthe machine carrying racks mounted on' gears, one side of said first mentioned bars together with its accompanying gears representing the minuend in a problem vin subtraction, the

other side thereof together With its accompanying gears representing ,thesubtrahend and the third system of bars together with its accompanying gears 'representing the remainder, each of such bars being so con- Vnected'upyvith disks havingv curved peripheral extensions divided into numbered registering spaces, that such disks will register before a face plate on the machine the minuend, subtrahend and remainder respectively vvhen the bars are operated to meet the locking means Withthe respective numbers .on the keysf 2.' In a calculating'machine, the combina.

tion o'f a plurality of pairs of bars, (paralleling eacli other across the machine en having -and means for changing the relative longi y tem of bars 'paralleling the said sets of bars racks attached thereto mounted ony gears, the gears adapted to rotate independently of each other, the said bars adapted for longitudinal movement along with the racks over said gears, the length ot such movements being gaged by locking vmeans etected by stops in' the key bars engaging stops on the paralleling bars, a Vthird system of bars paralleling the said sets of bars across the. machine carrying racks mounted on gears,

t-udinal positions of each bar with its corresponding rack.` y

3. ln a calculating machine, the combination of a plurality of pairs of bars, paralleling each other c'across the machine and having racks attached thereto mounted on gears, the gears adapted to rotate independently of each other, the said bars adapted tor longitudinal movement along with the racks over said gears, the length of such movementsbeing gaged by locking means eiiected by stops'in the key bars engaging stops on the paralleling bars, a third system of bars paralleling the said sets of bars across the machine carrying racks mounted onv gears, and means for changing the rela! tive longitudinal positions of each bar with its corresponding racktogether With means for retaining said ba'rs `in relative neutral positions to register 0 in each the minuend,.

subtrahend and remainder systems on ythe numbered spaces of the registering disks, means for releasing the same and means for changing the relative longitudinal positions@ of4 each of the bars, and means for returning all bars to relative neutral positions.

et. In a calculating machine, the eembih nation of a plurality of pairs of bars, paralleling eachother across the machine 4and having racks attached thereto mounted on gears, `the gears adapted to rotate independently of-each other, the said'bars adapted for longitudinal movement along Withthe racks over'said gears, the length-of such movements being gaged by locking means eected by stops on the key barsengaging stops on the paralleling bars, a .third sysacross the machine carrying racks mountedon gears, one side of said irstnientioned bars together with .its accompanyinggears representing the minuend in a problem' in subtraction, the other side thereof together viiith its accompanying gears representing the l Ythereof and egiaeratingl meeste.

into numbered registering spaces, suchk Wheels carrying gears vmeshing With racks attached to the Afirst above mentionedA Psets ot bars in such a manner that with the movementsv of the bars in registering the minuend v and subtrahend such Wheels register before openings in thetop or"` the casing, duplicates of the minuend and suhtrahend4 of the first problem in subtraction Worked in a given series and adds to the same the amount of each succeeding minuendandsubtrahend and registers the same as aforesaid.

5., In a calculating machine,'the combination of a plurality of pairs of bars, par- `allel'ing eachother across the machine and having racks attached thereto mounted on gears, together with a third system of bars, paralleling the 'said sets of bars across tlie machine, carrying racks mounted on gears, one side of seid sets of gears representing the lminue'nd side of the machine mechanism and cooperating therewith, the other side thereof representing the subtrahend side therewith and the third set repr nting t e remainder mech .anism thereof'and coperating therewith, all

-'f the 'gearsso connected' that the minuend and subtrah'end gears may rotate-together in the same direction While the remainder gearsstand still, and when the subtrahend gear ceases to rotate and the minuend gears co'ntinue to rotate, that the remainder gears will rotate in an opposite direction to the full thesubtrahend gears cease to rotate. I,

, .ln testimony whereof I aiX my signature 'in'presence of tvvo Witnesses.

JOHN. OTTO ALMEN.

five dents Washiniton, I). C."

extent that the minuend gears rotate a'fter A each, byeddressing the Commission-er of atent. 

